Room air conditioner having vent control means



Nov, 4, 1953 5.31:. RosE RooM AIR CONDITIONER HAVING VENT CONTROL MEANS Filed Oct. 15. 1956 5 Sheets-Sheet 1 "lllllllllllllIll-lllllllllllllII\\\\\\\\\\ INVENToR.

STANLEY E. ROSE Y af/M HIS ATTRNEY Nov. 4, 19,58

Filed Oct. 15. 1956 E. RQsE- 5 Sheets-Sheet 2 F i G. 2

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O O vc F IG. 9

C 0 .'L D. E R

INVENTOR.

STANLEY a. nnss vHIS ATTRNEY Nov. 4, 195s ROOM vAIR CONDITIONER HAVING VENT CONTROL MEANS Filed oct. 15. 1956 s. E. Ross 5 Sheets-Sheet 3 Q oA o Q of@ obo Q @I @o 0 ow INVENTOR.

, STANLEY E nos:

HIS ATTORNEY RooM AIR coNDITIoNER HAVING VENT CONTROL lvlEANs Filed oct. 15. 1956 S. E. ROSE Nov. 4, 1958 5 Sheets-Sheet 4 INVENTOR.

STANLEY E.` Ros:

H I5 ATTORNEY ROOM AIR CONDITIONER HAVING VENT CONTROL MEANS Filed Oct. 15. 195e 5 sheets-sheet s FIC-.7

INVENTOR.

STANLEY E. ROSE HIS ATTCR NEYv ROOM AIR CONDITIONER HAVING VENT CONTROL MEANS Stanley E. Rose, Lyndon, Ky., assignor to General Electric Company, a corporation of New York Application october 1s, 1956, serial No. 615,840

14 claims. (ci. isz-267) The present invention relates to a room air conditioner and more particularly to a conditioner having a vent therein with a control mechanism for adjusting the air flow through the vent for the various conditions of operation.

Room air conditioners normally comprise a compressor, condenser, and evaporator connected in refrigerant ow relationship and arranged within a suitable housing which is mounted in a window or aperture leading to the outside and which is divided into at least two separate compartments. The evaporator is mounted within an inner compartment adjacent, the room and room 'air is blown through the compartment over the evaporator where it is cooled and dehumidiiied before being discharged back into the room. The compressor and condenser are normally mounted in an outer compartment through which outside air is circulated for cooling the compressor and condenser. `Many conditioners provide vents or apertures in the barriers dividing the housing into separate compartments through which fresh air may be introduced from the outside into the room and through which stale air from the room may be exhausted. It is often desirable during those periods when air is owing through the exhaust or inlet vents in the barrier to stop the operation of the compressor in order to prevent the unnecessary cooling of this air.

It is an object of this invention to provide an improved mechanism for controlling the air flow through an air vent of a room air conditioner.

It is another object of this invention to provide a vent controllingy mechanism having operating means which is interlocked at certain portions of its operation with a second operating means for actuating the electrical components of the room air conditioner.

It is a further objectof the invention to provide an improved air ilow controlling means for obtaining the exhaust of stale room air or the introduction of fresh outside air through the same air vent.

A still further object of the present invention is to provide an improved baille and damper arrangement with controlling linkage therefor in the air vent of a room air conditioner.

Another object of the invention is to provide an improved interlockingarrangement whereby the compressor actuating means is maintained in an inoperative position when the air conditionerunit control is positioned for exhausting air from the room or venting maximum fresh air'into the room.

Further objects and advantages of this invention will become apparent as the following description proceeds and the features ofpnovelty which characterize the invention will be pointed out with particularity in the claims annexed to and forming a part of this specification.

According to the present invention there is provided a room air conditioner having a housing divided by an innerbarrier into inner or indoor and outer or outdoor compartments. The evaporator or cooling means of the 2,858,678 Patented Nov. 4, 1958 conditioner is mounted in the vinner compartment and the condensing unit is mounted in the outer compartment. Air moving means are provided in both compartments for circulating streams of air therethrough. In order to obtain ilow of air between one compartment and the other,`thereby obtaining exhaust or venting of air from or to the room, a vent or aperture is provided in the barrier. An .air ow controlling means Within the aperture is actuated by an operating means designed for movement linearly to a plurality of positions for producing the requisite 'air flow throughk the aperture. 'Ihis operating means is interlocked to a second operating means for actuating the electrical components of the conditioner and also designed for linear operation. The interlock `is pivotally mounted between the lines of operation of the two operating means and contains cammingv surfaces and indented portions thereon which interfere with the operation of one operating means when the interlock has been pivoted by the movement of the other operating means to a certain predetermined position. v

- For a better understanding of the invention reference may be had to the accompanying drawings in which:

Fig. 1 is a side elevation `view in cross section to show the various positions ofthe components of the `air conditioner;

Fig. -2 is a perspective `view of the barrier with the baflie and damper arrangement and its associated operating means;

Fig. 3 is a detailed view of the bathe and damper arrangement within the vent of the barrier showing thel vent in the cool-ventA position;

ment showing the damper in the vent position and also vshowing the arrangement of the damper and baille with respect to the other components of the levaporator compartment; A

- Fig. 5 is another detailed view showing the damper and baie in the cool or closed position;

Fig.v 6 is another detailed view showing the damper andl baffle in the exhaust position;

Fig. 7 is a partial rear elevation view of the control plate assembly showing the relationship between the two operating arms and the interlock;

Fig. 8 is Aa front elevation view of the control panel of Fig. 7 showing the interlock and its relationship to the two operating arms with the electrical control actuating arm in the Aoi position and the datnper and batfle operating arm locked in the cool or cool-vent positions; and

Fig. 9 is a View 'similar to the view of Fig. 8 but with the escutcheon plate and control knobs in place.

Referring now to Fig. l there is shown a self-contained room air conditioner having a housing 1 adapted for mounting in a Window orv other aperture of the room to be conditioned. The space within the housing is divided by a barrier 2 into two compartments designated the inner or evaporator compartment 3 and the outer or condensing compartment 4. The housing is normallyl together by means of 'a compressor exhaust line 7..

A fan or air moving means '8' is mounted in the lower part of the outer compartment 4l and pulls a stream of air from the outside into thelouter compartment and passes it upwardly over the condenser 6'for cooling the condenser and discharges the air through the outlet grille 11 in theV rear of the housing, Thus the outside air is drawn through 'the' condenser inlet grille 9 and into the outer compartment 4 Aand flows upwardly 'along the barrier 2 over the condenser 6 and out the discharge grille 11. The f an 8 Vis .driven` byy a motor 12 mounted in the h/ar'rie'rnZ which divides the housing into two separate cornp"artrrrents. l* y In order to cool `or.co'uditim the 'air Within 'the room there is proyidedwwithin the inner compartment 3 an evaporator 13 positioned in the upper portions of the compartment and connected in refrigerant Vil'ow relationship 'oompressor 5 and the condenser 6. is drawn from within the room through .an inlet grille 14 bya 4fa'nr air ving means V15 positioned in the lower portion I-of Athe inner compartment. In the present illustration 4of the invention, the evaporator fan 15 is driven by :the faster, 1a :whin 'also inves the compressor fan 8 I v However, 4'itis not absolutely essentiallthat the evapor'torrfan be 'driven by 'the saline motor vthat. drives the cor'npreisfsorx'fa'n and -it would be possible to nse aseparate t r 'for this purpose. The V air Ystream drawn into the m evapora't leomprt'ment 3 4from the 'room passes upwardly adj'aeentthe barrier [through the evaporator 13 and Iis disehargied 'baek into xthe room through the discharge grille 16.

i As vthus far described, however, the air conditioner with n two separate compartments and condensing means forms nopar't of the present invention but is intendedonly to be Aillustrative the (type of conditioner :to 4which the invention may be adapted. As will now be explained the invention deals with venting structure land :control mechanism ineo'rpbrated'therewith for applying different conditioning effects to the room toward which 'the' inner compartment faces.

In lcondltlonmg-.a QPma it 13 SQmemes exhaust the k'stale air within the room to the/outsideor to bring in fresh outside air to be ,mixed with the recircnlated roern'air. tofprovide for these functions, there Ais providedinlthe barrier 2 an aperture or vent 17 wh' Ih vpermits 'fthe flow of air between the Vtwoseparate compartments. In the illustrated embodiment of the inventionthe aperture 17 is positioned inV thev barrier 2 direetly above ithe fan motor 12. In order to control the ,amount and direction of the air flowing through the aperture, there is provided a controlling vmeans `or mechanical Vcontrol system comprising a damper 18 and baille "19 which are secured'to the barrier above the evaporator fan 15. In Fig. 2, itcan'be seen that the4 damper hingedlyhrnounted within the aperture 17 by a hingelm'ember 21 which is rigidly fastened ltothe face of the damper 18 and has a pair of arms extending upwardly andpinotally attached -v to an' upper shaft-22.` The upper shaft l22 extends through left and'right brackets v23 and 24re`s'p ectively,fwhich nare in turnfastened to the barrier 2. A damper spring 26, also positioned upon the upper y shaft 22, biases the damper into the closed position across thefaperture 1 7.

The baille .19 is--provided with aipair of outwardly bent earsk27uand `28k which are mounted upon a vlower shaft 2 9 attached to thezbarrier`2 through the left and right bracket members 23 and 24. The outwardly bent ears 27.VA andthe lower shaft 29,cooperate to form a pivotal-mount around which the baille 19 may be rotated outwardly from a position ilush against the barrier within the inner compartment 3. The baille 19 is biased into a normallyl flush position against the barrieruby a baille spring 30 also mounted uponthe lower shaftv 29.

Innorder to operate the damper- 18 and baille 19 to provide the `necessary *air flow requirements Vfor' exhausting stale air from within the room and for introducing fresh air from the outsideinto theroom, there is provided an'operatinglmeans Vincludi-ng'a controlor voperating arm "31havingan end thereof *extending through a slot inthe control panel, with'ithe other 'end'extending upwardlyinto the 'inner eomp'artment whereupon it is desirable to pivotally attached to a drive rod 32. The drive rod 32 has an 'axis of rotation adjacent the face of the barrier 2 and is held in place against the barrier by means of the bearing bracket 33 and the right hand bracket 24. The drive rod 32 comprises a throw portion 34 and a reversely bent crank portion 35 at its end adjacent the bearing bracket 33 whereupon it s attached to the operating arm 31. A link 36 connects the baille 19 to the throw portion 34 of the drive rod 32. The link 36 is attached at one end to an outwardly bent ear 37 on the baffle 19 and contains a slot 38 formed in its other end through which the drive rod 32 extends. The connection `between the baffle 19 and the -drive rod 32 is such that during a certain portion of the rotation of the drive rod 32 there will be no movement or pivoting of the bafile 19. As clearly shown in Fig. 2 the slot 38 is considerably longer than the diameter of the driving rod 32. Thus depending upon the position of the drive rod 32 there will be some movement of the throvv 'portion v34--be`fore the link 36 is engaged to e'ause 'a pivoting of the baille 1'9. In other words .the slo't 38 and the throw portion V34 comprise a llost motion vconneetit'in.

Linking the damper 18 with the throw arm 34 is 'a rocker arm assembly which pivots about the lower shaft 29. A`s ea'n be seen Yin Fig. 3 the rocker arm assembly comprises a rocker 39 having pivotally connected thereto a damper link 41 which contains a -lug v41a at one end thereof extending through a hole in the damper 18. In order to drive therocker assembly, therel is an assembly connecting link '42 Yalso pivotally attached to the rocker 39 and having Tone end extending upwardly adjacent the slot 38 in 'the baille )link 36. inthe end of the assembly connectin'gflink 212 adjacent the slot 38 Athere is formed a U-shped slot 42a designed to engage 'the throw portion of the rdrive rod 32 during rotation Vthereof in the counterclockwise direction, as shown in Fig. '5. During rotation of the drive rod 32 in the counterclockwise direction the throw Varm 3'4 rotates downwardly, engaging the U-shaped slot 42a of the assembly connecting link 42, and causes the rocker assembly to move about its pivot point 40 thereby forcing the damper link 41 into the'apertu'rfe 17 and causing the damper'to rotateabout the 'shaft 22. Y

As can best be seen in Figs. 5 and 6, during elockwise rotation of the drive rod 32 the throw .portion 34 of the rod slides in slot'38 upwardly until it contacts the upper end of ille slot 38 of the baille klink 36. 'During this operation the rocker assembly is rotated eounterclockwise aroundits .pivotpoint '40 until there is no longer any 'c'ontt between the vthrow portion 34 and the U-'shap'ed slot 12m. At this .point'the dampervspring 26 forces the damper 18 to close 'the aperture '17. Referring now to Figs. 3 and 4, further cloekwise rotation of the drive rod3`2 causes the baille link 36 to rotate the baille about the lower shaft 29. As the baille 19 is rotated'fr'om its position ilu-sh against the barrier outwardly across the air stream it comes into contact with the rocket 39 at its lower portion `43 thereof and forces the rocker assembly to rotate clockwise around the lower shaft 29. Thus as the baille 19 is rotated outwardly*V across `the air stream therocker rotates clockwise around the shaft 29 and forces the damper link into the aperture 17 thereby causing the damper -18 to pivot outwardly around the shaft-'22 thereby opening the aperture.

As-can best be seen in Figs. l, 2, 8 and 9 the operating arm 31 has one end pivotallyl connecting with the reversely bentcrank portion 35 of the drive yrod-32 and the other end extendingdownwardly through the inner compartment 'with the portion 31a extending outwardly through a slot 44 in the'controlpanel 45. As the end 31a is moved linearly-upwardly and downwardly in the sl-ot '440i the controlpanel 45, the -operating arm31 rotates the drive rod 32 clockwise andcounterclockwise about'4 its axis, which in turn causes thedamper andbale to assume the proper positions. In order to maintain the operating arm in position through the slot 44 in the `control panel 45 there is provided a roller assembly 46 attached to the operating arm adjacent the end 31a. The roller assembly 46 is held in place against the rear of the control panel 45 by a detent spring 47 (shown in Fig. 7) which extends the length of the slot 44 and passes over the central portion of the roller assembly 46. In operation the rollers 48 ride smoothly against the rear side of the control panel 45 as the end 31u of the operating arm is moved linearly upwardly and downwardly along the slot 44 in the control panel.

As shown in Figs. 7, 8 and 9 the operating arm 31 is designed to be normally moved to a plurality of positions along the slot 44 in the control panel. Basically this provides four dierent positions or arrangements of the damper and bale to give four different conditioning effects. In Fig. 9 these positions are indicated upon the escutcheon plate 49 assembled to the front of the control panel 45. The comfort knob 51 provides a convenient means for manually moving the arm 31 and is mounted upon the end 31a after the escutcheon plate 49 has been assembled to the front of the control panel. When the end 31a of the operating arm 31 is in its lowermost position within the slot 44 the drive rod 32 and the throw portion 34 are rotated counterclockwise to a position such that the damper 18 is forced outwardly through the aperture 17 and the baffle 19 is flush against the barrier 2, as illustrated in Fig. 6 of the drawings. 'Ihis arrangement of the damper and bale is known as the exhaust position and the flow of air through the aperture is from the inner compartment 3 to the outer compartment 4. As the end 31a of the operating arm is moved upwardly within the slot 44, the drive rod 32 is rotated clockwise about its axis and, as it reaches the position shown in Fig. 5, the damper 18 is in the closed position across the aperture 17 and baille 19 is flush against the barrier. In this position there is no air ow through the aperture and the conditioner is in its normal cooling position.

Referring now to Fig. 3, it can be seen that further upward movement of the end 31a of the operating arm 31 rotates the drive rod 32 clockwise about its axis and causes the baille 19 to swing outwardly around its pivot point. As the bafe 19 swings outwardly the damper 18 is forced away from the aperture 17 thereby allowing the ow of air therethrough. As the baille 19 is partially raised across the air stream, i't blocks some of the air coming from the evaporator fan 15. With the damper partially open, some outside air is forced by the condenser fan 8 to flow through the. aperture 17 into the inner compartment 3 where it mixes with the room air and passes through the evaporator coil 13, where it is cooled and dried, and is then discharged along with the recirculated air back into the room. This arrangement of the damper and baille is the cool vent position indicated on the escutcheon plate 49 in Fig. 9. When the comfort knob 51 is moved to a position adjacent the vent portion indicated upon the escutcheon plate 4.9, so that the end 31a of the operating arm is moved to the upper portions of the slot 44, the damper is moved into its fully open position and the baille 19 is fully raised across the air stream within the inner compartment 3. In this position, with the baffle 19 completely raised, more of the room air coming from the evaporator fan 15 is blocked. With the damper 18 fully opened, an increased quantity of outside air is forced through the aperture 17 into the inner compartment 3 by the condenser fan 8 where it mixes with the room air which does happen to escape around the bafe 19. The mixture then passes throughy the evaporator coil 13 and discharges into the room. This arrangement of the damper and bale is illustrated in Fig. '4, and provides a means for venting fresh air from the outside into the room.

When the damper 18 and baille 19 are inthe exhaust position illustrated by Fig. 6 it is necessary to have the air llow through the aperture from the inner compartment to the outer compartment. During normal operation, the condenser fan 8 draws air inwardly through the lower portion of the outer compartment 4 and passes it upwardly along' the barrier 2 through the condenser 6 and discharges it outside through the upper portion of the outer compartment. With the air flowing through the outer compartment 4 in this direction, exhausting of air through the aperture 17 from the inner compartment to the outer compartment isdiiflcult to obtain. To remedy this and cause the air stream in the outer compartment 4 to flow in the opposite direction from the direction it ows during normal operation, the condenser fan 8 is reversed as the end 31a of the operating arm 31 is moved linearly downwardly into the exhaust or bottom position. This is accomplished by reversing the ow of current through the phase winding of the fan motor 12 by use of a reversing switch 52 (shown in Fig. 7) which `is mounted on a bracket fastened to the back of the control panel 45. Referring to Fig. 7, reversing switch 52 is operated by a C-shaped arm 53 which goes around the damper operating arm 31. As the operating arm 31 is lowered to its bottom or exhaust position the arm 31 pushes down on the C-shaped arm 53 which actuates the switch contacts of the reversing switch 52 causing the fan motor 12 to change its direction of rotation.

When, as in the illustrated embodiment of the invention, the condenser fan motor 12 also drives the evaporator fan 15, reversing of the motor will also cause the evaporator fan to rotate in the opposite direction. When this is the case, the design of the evaporator fan must be such that it moves very little air when operating in the reverse direction. With the condenser fan 8 turning in the reverse direction, the air pressure in the inner compartment above the fan 15 is such that room air is drawn through the air discharge grille 16 through the aperture 17, whereupon it is picked up by the condenser fan 8 and is` forced outside through the lower section of the inlet grille 9. The air stream within the outer compartment will be reversed and will flow downwardly adjacent the aperture 17 in the barrier, and be discharged through the grille 9 into the outside air.

The air conditioner is equipped with an automatic thermostat 54 which is also mounted on the rear of the control panel 45. The thermostat 54 controls the operation of the compressor motor and is operated by a second or electrical component operating means which is movable linearly to a plurality of positions along a line parallel to the movement of the operating arm 31. The electrical components operating means comprises a second control or operating arm 55 and a linkage 57 connecting the arm to the thermostat. The second operat- 1ng arm 55 extends through a slot 56 parallel to the first operating arm slot 44 and permits continuous adjustment of the automatic thermostat 54 through a plurality of positions giving the required temperature selection range. A temperature selector knob 58 provided upon the end of the second operating arm 55 provides ease of movement in selecting any desired temperature setting as indicated upon the escutcheon plate 49 in Fig. 9.

As can be seen in Fig. 7, there is also mounted on the rear of the control panel just below the thermostat, a switch 59 having a plurality of contacts which open or close the electrical circuits to the fan motor 12 and to the thermostat 54, The switch contacts across the respective circuits are actuated by a spring-loaded plunger 61 which keeps the contacts normally closed. As the electrical components operating arm 55 is moved all the way to the bottom of slot 56, a iat portion 62 on the thermostat linkage 57 pushes down on the switch plunger 61 to open the electrical circuits. When the temperature selection knob 58 and thereby the second operating arm `2' 55 is `moved from its bottom 4'position upwardly lto the fan position indicated upon vthe escutcheon lplate 49, the fan -motor -1-2 is energized 'and l-air is circulated through the respective compartments. vFurther movement of the arm 55 upwardly causes the circuit to be completed to the thermostat 54 and this actuates the compressor. Starting lof the fan before starting the compressor reduces the starting currents. Further upward movement -of the electrical control `arrn 55 will give a temperature setting of the automatic thermostat 54 for the proper condition` ing requirements within the Yroom. =It should `be noted that a pair of switches could be used rather than the single switch 59 having a plurality of contacts and still be within the scope ofthe present invention. tBy having the fan motor -circuit actuated Vby the electrical `control arm 55 `at-a different position and separately :from the actuation of the compressor circuit, another function to be hereinafter described is provided.

Referring now to Fig. `8, it can Vbe seen that the electrical components controlling means and the air fi-ow controlling means-are both operable toa-plurality of positions along parallel straight lines positioned in the plane -of the control panel. lt is desirable to prevent `the operation of the -compressor when the air ow controlling means is-either in the vent or exhaust positions and conversely it is desirable to prevent the opening of the damper 18 to the vent or erihaust positions while the condenser unit is oper-ating. ltis also -desirable to prevent the opening of the damper 18 to the vent or exhaust positions when the -electrical control means is in the off position or in other words when the air conditioner is not operating. lnorder to provide this function there is an interlock 63 pivotally mounted upon the front of the control panel 45 between the bale operating arm 31 and the electrical control operating arm 55. The interlock 63 comprises a flat longitudinal member pivotally attached at its one end to the lcontrol panel 45 by a pin 64 and having a slot 65 at its other end which rides upon a guide pin 66, also attached to the control panel. The interlock 63 is slightly wider than the distance between the lines of operation of the operating arm 31 and electrical control orV second operating arm 55 and is biased against arm S5 by a spring 67 co-nnected between the lower end of the interlock and the control ,panel 45. An indented portion 63 on the side adjacent the first operating arm 31 and another indented and camming portion 69 on the side adjacent the second operating arm 55 provide the necessary interlocking functions.

lt can be seen in Fig. 8 when the firstoperating arm 31 is set at either the cool Ior cool vent positions, the interlock 63 can swing to -the left permitting the second operating .arm 55 to be raised high enough to actuate the thermostat-521 to start the compressor motor and move to any ofthe numbered temperature settings indicated i upontheescutcheon plate 49. When the first operating arm 31 is in the exhaust or Yvent positions the interlock cannot swing farenough `to allow'the second operating arm S710-be raised higher than`the fan energizing position. In fact, the only position-that the secondoperating arm 5'7can be located when the first operating arm 31 is in the-exhaust or vent positions ris thefan energizing position. Likewise, when 'the secondoperating arm v55 is in -any one of the thermostat positions'the first operating arm 31 cannot be moved from either the cool o'r the cool vent position to the exhaust -or vent positions. This feature prevents the cooling of 'stale air as it is being exhausted to the outside and prevents the unnecessary cooling excessive amounts of outside air when fresh outside air is being vented through the aperture 17. When the second operating arm is moved downwardly to the off position, the interlock 63 is forced toward the first operating'arm V31 and unless the first operatingarm 31 is in 'either the cool or the cool ventposition the -second operating arm may not be moved completely down into the otfiposition, and conversely, when the second operating arm is in-the'offposition, the first operating arm may not-be moved out ofthe'cool orcool vent positions.

rIt is possible, merely by rearranging the position of the-indented'portions of the interlock 63 to obtain other interlockingcontrol.` A'TF-or example, if the indented portion 68 were only of sufficient length to include that portion of the-movementof the first operating arm 31 where the operating arm 31 maintains the damper in the closed pc sition, then the cool vent position of the damper would be completely eliminated, in that it would be possible to operate the condensing unit only when the damper was in the closedposition. YItis'alsopossible to have an interlock which is not pivoted at either end, as the interlock ..vculd 1operate just as -fwell if both ends were mounted upon 'the control panel by the sliding arrangement .provided by the slot'65 and the pin 676.

By the present invention there has been provided a new and improved vent controlling means designed to provide a plurality of different conditioning e'ects within a room air conditioner. Moreover this vent controlling means is completely interlocked with the controlling means for `operating the electrical components of the air conditioner in order to prevent any wasteful operation of the refrigerating unit during predetermined positions of the vent controlling means.

v'While in accordance with the Patent Statutesfthere lhas been described what at present is considered :to be the preferred embodiment 'of the invention, it will be obvious to those skilled'in the art that various changes and modifications may be made therein without departing from the linvention and it is, therefore, the aim of the appended claims to cover all such changes and modifications as fall within the true spirit and scope of the invention.

What I claim as new and desire to secure by uLetters Patent of the United States is:

l. An air conditioner for conditioning a room comprising a housing, a barrier dividing said housing into an outer compartment and an inner compartment, a condensing unit in said outer compartment, an evaporator in said inner compartment, a 'first aix moving means for circulating a stream of air from said room through said inner compartment over said evaporator and discharg-l ing it back into said room, a second air moving means for circulating a stream of outside air through said outer compartment over said condenser, an aperture in said barrier for permitting ow of air from one compartmentto the other, a controlling means in said aperture for Vcontrolling the flow of air-therethrough, a first operating means for operating said controlling means, said operating means being translationally movable to a plurality ofpositions to change the position of said controlling means, a second operating means for energizing said air `moving means and said condensing unit, said second operating means being movable to a plurality of positions in the plane of translation of said rfirst operating means, an interlock movably mounted between said rst and second operating means having camming surfaces and indented portions designed to engage said first and second operating means, said camming surfaces and indentedportions causing said interlock to move into interlocking engagement with one `of said means during the movement of the other-of said means to prevent movement of said one means to predetermined positions when `the other means is moved to a certain-predetermined position.

2; An-air conditioner for-conditioning a room comprising a housing, a barrier dividing said housing into lan outer compartment andan inner compartment, a condensing unit in said outer compartment, an evaporator in said inner compartment, -a' first air moving vmeans for circulating a stream of air from said room through fsaid inner compartment over said evaporator and discharging it back into said room, a second air moving means for 9 circulating a stream of outside air through said outer compartment over said condenser, an aperture in said barrier for permitting ow of air from one compartment t the other, a controlling means in said aperture for controlling the ow of air therethrough, a first operating means for operating said controlling means, said operating means being movable in a straight line to a plurality of positions to change the position of said controlling means in said aperture, a second operating means for energizing said fan and said condensing unit, said second operating means being movable to a plurality of positions in a line parallel to movement of said rst operating means, an interlock movably mounted between the lines of movement of said rst and second 'operating means and having camming surfaces and indented portions designed to engage said iirst and second operatingv means, said camming surfaces' and indented portions causing said interlock to move into interlocking engagement with one of said means during the linear movement of the other of said means to prevent movement of said one means to predetermined positions when the other means is moved to certain predetermined positions.

3. An air conditioner for conditioning a room cornprising a housing, a barrier dividing said housing into an outer compartment and an inner compartment, a condensing unit in said outer compartment, an evaporator in said inner compartment, a iirst air moving means for circulating a streamof air from said room through said inner compartment over said evaporator and discharging it back into said room, a second air moving means for circulating a stream of outside air through said outer compartment over said condenser, an aperture in said barrier for permitting flow of air from one compartment to the other, a damper in said aperture for controlling the ow v of air therethrough, abatfle in said inner compartment pivotally mounted on said barrier adjacent said air stream and adapted to pivot across said air stream upstream `from said aperture and retard the flow of air thereto, a rst `operating means for controlling said damper and said bale, said means designed for linear movement to a plurality of positions, a second operating means for energizing said fan and said condenser unit, said second means designed for movement to a plurality of lpositions in a line parallel to movement of said rst operating means, an interlock having opposite edges thereof adjacent said lines of movement of said operating means and pivotally mounted between said iirst and second operating means, said interlock having camming surfaces and indented portions on said opposite edgesthereof designed to engage said first and second operating means, said camming surfaces and indented portions causing said interlock to pivot into interlocking engagement with one of said controlling means during the linear movement of the other of said controlling means to prevent movement of said one controlling means to a predetermined position when the other of said controlling means is moved to certain predetermined positions.

4. An air conditioner unit for conditioning a room com- 'prising a housing, a barrier dividing said housing into an outer'compartment and an inner compartmenna condens- Aing unit in said outer compartment, an evaporator in said inner compartment, a rst air moving means for circulating a stream of air from said room through said inner compartment over said evaporator and discharging it back into said room, a second air moving means for circulating a stream of air through said outer compartment over said condenser, an aperture in said barrier for permitting the ow of air from one compartment to the other, a damper in said aperture for controlling the amount of air owing therethrough, manually operated means for adjusting the position ofV said damper to control the amount of air flowing through said aperture, a battle adjacent said air stream .flowing through rsaid inner compartment, said baille beingnormally iiat against said barrier and adapted to pivot into position across said air stream and retard its iiow, and connecting linkage connecting said baiie to said manually operated means to simultaneously operate said bale while said damper is being operated thereby providing simultaneous control of the flow of air through said inner compartment and through said aperture.

5. An air conditioner unit for conditioning a room comprising, a housing, a barrier dividing said housing into an outer compartment and an inner compartment, a condensing unit in the upper portion of said outer compartment, an evaporator in the upper portion of said inner compartment, a first air moving means in the lower portion of said inner compartment for circulating an air stream from within said room through said inner compartment upwardly over said evaporator and discharging said air stream back into said room, a second air moving means in the lower portion of said outer compartment for circulating a stream of air from outside through said outer compartment upwardly over said condenser and discharging it outside, an aperture in said barrier adapted to permit the ow of air from one compartment to the other, a damper in said aperture for controlling the amount of air ilowing therethrough, a bathe in said inner compartment adjacent said air stream owing upwardly through said inner compartment, said battle being positioned normally ush against said barrier and adapted to pivot into positions across said air stream and retard its ow, manually operated means for adjusting the positions of said damper and said baffle to control the amount of air iiowing through ysaid aperture, said means comprising an operating arm designed to be moved from a first position to a plurality of positions, and connecting linkage connecting said operating arm with said damper and said batile whereby said damper is moved from a fully open position to a closed position and then to a fully open position when said operating arm is moved from its rst position to its furthermost position and said baffle is moved from a position ush against said barrier to a position .across said air stream while said damperv is moved from its closed position to its open position, said baie remaining flush against said barrier during Iall other positions of said damper. f

6. An air conditioner unit for conditioning a room comprising, a housing, a barrier dividing said housing into an outer compartment and .an inner compartment, a condensing unit in the upper portion of 'said outer compartment, an evaporator in the upper portion of said inner compartment, a irst air moving means in the lower portion of said inner compartment for circulating an air stream from within said room through s'aid inner compartment upwardly over said evaporator and discharging said air stream back into said room, a second air moving means in the lower portion of said outer compartment for circulating a stream ot air from outside through said outer compartment upwardly over said condenser and discharging it outside, an aperture in said barrier adapted to permit the ilow of air from one compartment to the other, a damper in said aperture for controlling the amount of air flowing therethrough, a baille in said inner compartment adjacent said air stream flowing upwardly through said inner compartment, said baie being positioned normally flush against said barrier and adapted to pivot into position across said air stream and retard its flow, manually operated means for adjusting the positions of said damper and said baie to control the amount of air flowing through said aperture, said means comprising an operating arm designed to be moved in a straight line across said air stream while said damper is moved from its closed position to its second open position, said batiie remaining ush against said `barrier during all other positions of said damper.

7. .An airconditioner for conditioning a room comprising a housing, a barrier dividing said housing vinto an outer compartment and an inner compartment, a condensing-unit in 4said outer compartment, an evaporator .in said inner compartment, a tirst air moving means for circulating a stream of air from said room through said inner compartment over said evaporator and discharging it back into said room, .a second air moving means for circulating a stream of outside air through said outer compartment over said condenser, an aperture in said barrier for permitting flow off -air rfrom 4one compartment tothe other, a damper `hingedly mounted on said barrier vfor opening and closing said aperture to control the flow of air thereto, a (battlepivotally mounted upon said barrier within said inner compartment and adapted to pivot fromva position .normally flush against said vbarrier Vto a position across said air stream, an operating means for operating said `damper `and said Vbaille to control the ow of air through said aperture, said operating lmeans comprising a manually operated control arm designed for linear movement from a rst position to a plurality of positions along a straight line, connecting linkage connecting said baiiie and said damper to said control arm, said 4linkage designed to cause said damper to move from an open position to a closed position and then to an open ,position as said operating arm is moved from its viirst position to -its furthermost position, said linkage also causing said baiiie to move vfrom a position flush against said barrier to -a position across said air stream while said damper is moving from a closed position to a fully open position during the movement of said operating arm from an intermediate position to its furthermost position, said baffle remaining tlush against said barrier during the remaining movement of said damper, a Areversing switch 'for reversing said air moving means, linkage connecting said switch with said operating arm, said linkage thereby causing said switch to reverse said air moving means when said operating arm causes said damper to open while said bafe is in position flush against said barrier.

8. vAn air conditioner for conditioning a room comprising a housing, a barrier dividing said housing into an outer compartment and an inner compartment, a condensing unit in said outer compartment, an evaporator in said inner compartment, a iirst air moving means for circulating ,a stream of air from said room through said inner compartment over said evaporator and discharging it back Vinto said Vroom, a second air moving means for circulating a stream of outside air through said outer compartment over said condenser, an aperture in said barrier for permitting iiow of air from one 'compartment to ythe other, a controlling means in said aperture for controlling `the Vtlow of air therethrough, a .first operating means for operating said controlling means, said operating means being movable in a straight line to a plurality of `positions to change the amount of air ow through said aperture, an air moving means actuating switch, a condenser unit actuating switch, a second operating means for operating said air moving means actuating switch and said condenser unit actuating switch comprising an operating arm designed for movement from a first position toa plurality of positions in a line parallel tothe movement of said iirst operating means, said movement of said operating arm designed to rst operate said air moving means switch and then operate Vsaid condensing unit-switch.

9.fAn air conditioner for conditioning a room comprising .a.housing, a Lbarrier dividing said housing into an outer `compartment and an inner compartment, a condensing unit in said outer compartment, an evaporator in said iinner compartment, a rst air moving means for 1:2 circulating a stream of air from -said room through said inner compartment over said evaporator and discharging it back into said room, a second air moving means ifor circulating 'a stream of outside air through said outer compartment over said condenser, an aperture in said barrier for permitting flow of air from one compartment to the other, an air ow controlling m'eans in said aperture for controlling the ilow of air therethrough, a first operating arm for operating said air flow controlling means between open and closed positions, s'aid arm designed to move linearly to a plurality of positions, an air moving means actuating switch, a condenser unit actuating switch, a second operating arm designed Afor movement to a plurality of positions in a -line parallel tc the movement of said first operating arm, said movement of said second operating arm designed to rst operate said air moving means actuating switch and then operate said condensing unit switch, and an interlock pivoted at one end and mounted between said first and second operating arms in the plane of 'movement of said operating arms, said interlock having edges engaging said operating arms, said edges having cammed portions and' indented portions therein designed to cause said interlock to move into interference with one of said operating arms upon movement of the other of said arms to certain predetermined positions whereby said rst operating arm operates said air ow controlling means to prevent 'the flow of air through said aperture when said second operating arm actuates said condensing unit switch and conversely said second operating arm is prevented from actuating said condensing unit switch when said iirst operating arm has operated said ow controlling means to permit the flow of air through said aperture.

l0. An air conditioner for conditioning a room comprising a housing, a barrier dividing said housing into an outer compartment and an inner compartment, 'a condensing unit in said outer compartment, an 'evaporator in said inner compartment, a first air moving means for circulating a stream of air from said room through lsaid inner compartment over said evaporator and discharging it back into said room, a second air moving means 'for circulating a stream of outside air through said 1outer compartment over said condenser, an aperture in :said barrier for permitting ow of air from one compartment to the other, a controlling means in said aperture -for controlling the ow of air therethrough, a first operating arm for operating saidI air controlling means into open and closed positions, said arm being movable linearly to a plurality of positions, a switch for energizing said air moving means, a condenser unit switch for energizing said condenser unit, a second operating arm for operating said air moving means switch and said condensing unit switch in sequence as said arm is moved to a plurality of positions in the plane of a straight line parallel to the movement of said tirst operating arms, an interlock pivotally mounted between said iirst and second operating arms, said interlock comprising a flat longitudinal member having edges thereof positioned adjacent said operating arms, said edges having indented portions therein, a spring biasing said interlock against said second operating arm, said indented portions on one 'edge of said -i'nte'r'- lock designed to move into interference with said .rst operating arm to prevent movement of said 'r'st operating arm to a position whereby said air flow controlling means is actuated to a fully open position at such times Ywhen said second operating arm has actuated said condensing unit switch to energize 'said condensing unit, and conversely said indented portions on the other edge of 'said interlock are designed to move into interference with said second control arm when said iirst operating arm has moved said air ow controlling means into a fully open position thereby preventing said second operating arm from actuating said condenser unit switch.

1l. An air conditioner for conditioning 'a room comprising a housing, a barrier dividing said housing into an outer compartment and an inner compartment, a condensing unit in said outer compartment, an evaporator in said inner compartment, a first air moving means for circulating a stream of air fromA said room through said inner compartment oversaid evaporator and discharging it back into said room, a second air moving means for circulating a stream of outside air through said outer compartment and over said condenser, an aperture in said barrier for permitting ilow of air from one compartment to the other, a damper in said aperture for controlling the flow of air therethrough, a baille pivotally mounted on said barrier. adjacent said air stream within said inner compartment, a rst operating arm movable linearly from a first position upwardly to a plurality of positions,- connecting linkagey connecting said damper and said baffle to said arm, said linkage designed to cause said damper to move from a first fully open position to a closed position and then to a second fully open position as said first operating arm is moved from its first position to its fnrthermost upward position, said linkage also causing said bale to move from a position' flush against said barrier to a position across said air stream while said damper is moving from a closed position to its second fully open position during the upward movement of said first operating arm, said baffle remaining flush against said barrier during all other movement of said damper, a switch, said switch havinga plurality of contacts for energizing the'electrical circuits leading to said air moving means and said condensing unit, a thermostat, a second operating arm designed for movement linearly to a plurality of positions in a line parallel to the movement of said first operating arm, said movement of second operating arm designed to actuate said switch to iirst energize said air moving means and then to energize said condensing unit, said movement of said second operating arm also setting said thermostat for the conditioning requirements of said room, an interlock pivoted at one end and mounted between said first and second operating arms in the plane of movement of said rst and second operating arms and having edges adjacent said operating arms, said edges having cammed portions and indented portions designed to cause said interlock to move into interference with one of said operating arms when the other of said operating arms is moved to predetermined positions whereby said rst operating arm is prevented from moving said damper to a fully open position when said condensing unit is energized by said second operating arm and conversely said second operating arm is prevented from energizing said condensing unit when said rst operating arm has moved said damper to the fully open position.

12. An air conditioner for conditioning a-room comprising a housing, a barrier dividing said housing into an outer compartment and an inner compartment, a condensing unit in said outer compartment, an evaporator in said inner compartment, a first air moving means for circulating a stream of air from said room through said inner compartment over said evaporator and discharging it back into said room, a second air moving means for circulating a stream of outside air through said outer compartment over said condenser, an aperture in said barrier for permitting ilow of air from one compartment to the other, a damper in said aperture for controlling the ow of air therethrough, a rst operating arm for operating said damper within said aperture to open and closed positions, said operating arm being movable linearly along a straight line to a plurality of positions thereby causing said damper to move from a first fully open position to a 'closed position and then to a second fully open position while said arm moves from its rst position linearly to its furthermost position, a switch for energizing said air moving means, a condensing unit control comprising an actuating switch and a thermostat for energizing said condensing unit in accordance with conditioning requirements, a second operating arm designed densing unit control as said arm is moved from a iirst position to a plurality of positions in a line parallel to the movement of said first operating arm, an interlock comprising a flat, longitudinal member mounted for pivotal movement between said first andsecond operating arm with the edges thereof adjacent said operating arms, a rst indented portionextending along said edge of said interlock member'adjacent said first operating arm to permit said interlock to pivot towards said first operating arm during those positions when said arm has actuated said'darnperto a substantially closed position thereby permitting said second control arm to passk freely along the opposite edge of said interlock, a second indented portion extending along said edge of said interlock member adjacent said second operating arm to permit said interlock to pivot towards said second yoperating arm during those positions when said arm has actuated only said air moving means switch thereby permitting said first control arm to pass freely along the opposite edge of said interlock to operate said damper to said fully open position. v i

13. Anrair conditioner for conditioning a room comprising a housing, a barrier dividing said housing into an outer compartment and an inner compartment, a condensing unit in said outer compartment, an evaporator in said inner compartment, a rst air moving means for circulating a stream of air from said room through said innerrcompartment over said evaporator and discharging it back into the room, a second air moving means for circulating a stream of outside air through said outer compartment over said condenser, an aperture in said barrier for permitting iiow of air from one compartment to the other, a damper in said aperture for controlling the ow of air therethrough, a baille pivotally mounted on said barrier adjacent said air stream within said inner compartment, a iirst operating arm movable linearly from a first position upwardly to a plurality of positions, connecting linkage connecting said damper. and said baille to said arm, said linkage designed to cause said damper to move from a rst fully open position to a closed position and then to a second fully open position as said control arm is moved from its first position to its furthermost upward position, said linkage also causing said baffle to move from a position flush against said y barrier to a position across said air stream while said damper is moving from its closed position to its second fully open position during the upward movement of the first operating arm, said bale remaining flush against said barrier during all other movement of said damper, a switch, said switch having a plurality of contacts for energizing the electrical circuits leading to said air moving means and said condensing unit, a thermostat, a second operating arm designed for movement linearly to a plurality of positions in a line parallel to the movement of said first operating arm, said movement of said second operating arm designed to actuate said switch to rst energize said air moving means and then to energize said condensing unit, movement of said second operating arm also setting said thermostat for the conditioning requirements of said room, and an interlock comprising a at longitudinal member mounted for pivotal movement between said first and second operating arms with the edges thereof adjacent said operating arms, a first indented portion in said edge of said interlock adjacent said rst operating arm to permit said interlock to pivot towards said first operating arm when said first operating arm has caused said damper to move to a substantially closed position, saidv pivoting of said interlock thereby permitting said second operating arm to pass freely along the opposite edge of said interlock and actuate said switch to energize said air moving means, said condensing unit and said thermostat, a second indented portion in said edge of said interlock adjacent said second operating arm thereby permitting said interlock to pivot towards said -15 second operating arm when said second operating arm is moved to a position to actuate said switch to energize only said air moving means, said interlock therebypermitting said first operating arm to pass freely along the edge of said interlock and operate said damper and said bai-lie to all positions.

14. An air conditioner for conditioning a room comprising a housing, a barrier dividing said housing into an outer compartment and inner compartment, a condensing unit in said outer compartment, an evaporator in said inner compartment, a lirst air moving means for circulating a stream of air from said room through said inner compartment over said evaporator and discharging it back into said room, a second air moving means for circulating a stream of outside air through said outer compartment yover said condenser, an aperture in said barrier for permitting ow of air from one compartment to the other, a damper hingedly mounted on said barrier for opening and closing said aperture to control the ilow of air thereto, a baie pivotally mounted upon said barrier within said inner compartment and adapted to pivot from a position normally flush against said barrier across said air stream, an operating means for operating said damper and said baffle for controlling the ilow of air through said aperture, said operating means comprising a iirst operating arm designed for linearly movement to a plurality of positions along a straight line, connecting linkage connecting said baiile andrsaid damper to said iirst operating arm, said linkage designed to cause said damper to move from an open position to a closed position and then to an open position as said iirst operating arm is moved from its irst position to its furthermost position along said 15 straight line, said linkage also causing said baie to move from a position ush against said barrier to a position across said air strearnV while said damper is moving from a closed position to'a fully open position during the movement of said first operating arm, said baffle remaining ush against said barrier during the remaining movement of said damper, an air moving means reversing switch, a reversing switch arm connecting said switch to said iirst operating arm, said reversing switch arm thereby causing said switch to reverse said air moving means when said operating arm is in its irst position and while said damper is in said open position and while said baie is in a position ilush against said barrier, an air moving means actuating switch, a condenser unit actuating switch, a second operating arm designed for movement to a plurality of positions in a line parallel to the movement of said rst operating arm, said movement yof said second operating arm designed to iirst operate said air moving means actuating switch and then actuate said condenser unit switch, and an interlock having indented surfaces designed t-o engage said first and second operating arms, said indented portions causing said interlock to pivot into interlocking engagement with one of said arms during the linear movement of the other of said arms to prevent the movement of said one operating arm to predetermined positions when the other arm is moved to certain predetermined positions.

References Cited in the tile of this patent UNITED STATES PATENTS 

